[INFO] updating cached repository at1as/the_nuclear_option
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/at1as/the_nuclear_option
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/at1as/the_nuclear_option" "work/ex/beta-1.37-6/sources/1.36.0/gh/at1as/the_nuclear_option"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/at1as/the_nuclear_option'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/at1as/the_nuclear_option" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/at1as/the_nuclear_option"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/at1as/the_nuclear_option'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 58e4328a8951fbd570c8c9bc0ec499daaf0dc816
[INFO] sha for GitHub repo at1as/the_nuclear_option: 58e4328a8951fbd570c8c9bc0ec499daaf0dc816
[INFO] validating manifest of at1as/the_nuclear_option on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of at1as/the_nuclear_option on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing at1as/the_nuclear_option
[INFO] finished frobbing at1as/the_nuclear_option
[INFO] frobbed toml for at1as/the_nuclear_option written to work/ex/beta-1.37-6/sources/1.36.0/gh/at1as/the_nuclear_option/Cargo.toml
[INFO] started frobbing at1as/the_nuclear_option
[INFO] finished frobbing at1as/the_nuclear_option
[INFO] frobbed toml for at1as/the_nuclear_option written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/at1as/the_nuclear_option/Cargo.toml
[INFO] crate at1as/the_nuclear_option already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing at1as/the_nuclear_option against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/at1as/the_nuclear_option:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 425aa19f42e844ad296b7cd36256808b5abb8f437ebcb3b470b23c78cdf7a1cc
[INFO] running `"docker" "start" "-a" "425aa19f42e844ad296b7cd36256808b5abb8f437ebcb3b470b23c78cdf7a1cc"`
[INFO] [stderr]    Compiling unicode-normalization v0.1.4
[INFO] [stderr]    Compiling log v0.3.7
[INFO] [stderr]    Compiling httparse v1.2.2
[INFO] [stderr]    Compiling unicode-bidi v0.2.5
[INFO] [stderr]    Compiling num_cpus v1.3.0
[INFO] [stderr]    Compiling time v0.1.36
[INFO] [stderr]    Compiling hyper v0.10.9
[INFO] [stderr]    Compiling mime v0.2.3
[INFO] [stderr]    Compiling idna v0.1.1
[INFO] [stderr]    Compiling url v1.4.0
[INFO] [stderr] warning[E0713]: borrow may still be in use when destructor runs
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.4.0/src/form_urlencoded.rs:246:40
[INFO] [stderr]     |
[INFO] [stderr] 244 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 245 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 246 |     fn finish(self) -> &'a mut ::Url { self.url }
[INFO] [stderr]     |                                        ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        returning this value requires that `*self.url` is borrowed for `'a`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling nuclear_option v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Mime`, `SubLevel`, `TopLevel`
[INFO] [stderr]  --> src/main.rs:5:19
[INFO] [stderr]   |
[INFO] [stderr] 5 | use hyper::mime::{Mime, TopLevel, SubLevel};
[INFO] [stderr]   |                   ^^^^  ^^^^^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hyper::Ok`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use hyper::Ok;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.64s
[INFO] running `"docker" "inspect" "425aa19f42e844ad296b7cd36256808b5abb8f437ebcb3b470b23c78cdf7a1cc"`
[INFO] running `"docker" "rm" "-f" "425aa19f42e844ad296b7cd36256808b5abb8f437ebcb3b470b23c78cdf7a1cc"`
[INFO] [stdout] 425aa19f42e844ad296b7cd36256808b5abb8f437ebcb3b470b23c78cdf7a1cc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/at1as/the_nuclear_option:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 99f4ee695dc197c5ac14daf54861c3355d0d4dc5911d0e3edb6ed8fa131d323b
[INFO] running `"docker" "start" "-a" "99f4ee695dc197c5ac14daf54861c3355d0d4dc5911d0e3edb6ed8fa131d323b"`
[INFO] [stderr]    Compiling nuclear_option v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Mime`, `SubLevel`, `TopLevel`
[INFO] [stderr]  --> src/main.rs:5:19
[INFO] [stderr]   |
[INFO] [stderr] 5 | use hyper::mime::{Mime, TopLevel, SubLevel};
[INFO] [stderr]   |                   ^^^^  ^^^^^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hyper::Ok`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use hyper::Ok;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `"docker" "inspect" "99f4ee695dc197c5ac14daf54861c3355d0d4dc5911d0e3edb6ed8fa131d323b"`
[INFO] running `"docker" "rm" "-f" "99f4ee695dc197c5ac14daf54861c3355d0d4dc5911d0e3edb6ed8fa131d323b"`
[INFO] [stdout] 99f4ee695dc197c5ac14daf54861c3355d0d4dc5911d0e3edb6ed8fa131d323b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/at1as/the_nuclear_option:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 51315cc8a3c86caebaad0bbbd7cdf387e816b7198535bfdb8ec938756a49e947
[INFO] running `"docker" "start" "-a" "51315cc8a3c86caebaad0bbbd7cdf387e816b7198535bfdb8ec938756a49e947"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/nuclear_option-b1c10429bf235197
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "51315cc8a3c86caebaad0bbbd7cdf387e816b7198535bfdb8ec938756a49e947"`
[INFO] running `"docker" "rm" "-f" "51315cc8a3c86caebaad0bbbd7cdf387e816b7198535bfdb8ec938756a49e947"`
[INFO] [stdout] 51315cc8a3c86caebaad0bbbd7cdf387e816b7198535bfdb8ec938756a49e947